The library plainly holds material relevant to this atlas, and popular accounts make expansive claims about it. Specific holdings could not be verified well enough to assert a custody relation for any individual work, and asserting one without evidence would be exactly the kind of confident claim the atlas exists to avoid.
What would resolve this Shelfmarks from the library's own catalogue, which is partly published, for specific works already in this atlas.
OpenManuscript studies and catalogue research; Latin and Italian.Divinity Atlas Open Questions Register, First Edition